package com.example.tests;

import static org.hamcrest.Matchers.equalTo;
import static org.junit.Assert.assertThat;

import java.util.Random;

import org.testng.annotations.Test;

import com.example.utils.SortedListOf;

public class GroupModificationTests extends TestBase{

	@Test(dataProvider = "randomValidGroupGenerator")
	public void modifySomeGroup(GroupData group) throws Exception {
	  // save old state
      SortedListOf<GroupData> oldList = app.getGroupHelper().getGroups();
		    
	  Random rnd = new Random();
	  int index = rnd.nextInt(oldList.size()-1); 
		   
	  // actions 
	  app.getGroupHelper().modifyGroup(index, group);
         
      // save new state
	  SortedListOf<GroupData> newList = app.getGroupHelper().getGroups();
	  
	  // compare states
	  assertThat(newList, equalTo(oldList.without(index).withAdded(group)));    
	     
	  }

}
